the GNU version of the Collaborative International Dictionary of English
adj. Snowy; resembling snow; partaking of the qualities of snow.
The Century Dictionary and Cyclopedia
Snowy; partaking of the qualities of snow; resembling snow; pure and brilliant white, as the wings of certain moths.
Word Usage
"Roofless walls of niveous stone and truncated alabaster columns, never completed and now wreathed by thick vines, covered the leveled top of the mountain."